JIS G3106 SM570 Steel Plate | SM570 Mill Direct Supply
What is JIS G3106 SM570 Steel Plate?
As a professional steel plate supplier and China Mill-Direct Exporter, SHH STEEL is pleased to present JIS G3106 SM570 Steel Plate.
SM570 is a high-strength rolled steel for welded structures under the Japanese Industrial Standard JIS G3106. It provides a minimum yield strength of 460 MPa (for thickness ≤ 16 mm) and a tensile strength range of 570–720 MPa. This is the highest strength grade commonly supplied under JIS G3106 and is designed for heavy-duty welded structures that require higher load-bearing capacity while maintaining good weldability.
This grade belongs to the JIS G3106 STEEL PLATE series. SHH STEEL supplies SM570 as Mill Direct Supply, sourcing directly from major Chinese steel mills. This ensures competitive mill pricing, consistent quality, shorter lead times and full traceability. We offer thicknesses from 6 mm to 100 mm (subject to standard and mill limitations), widths up to 3000–4000 mm and lengths up to 12000–18000 mm. Custom cutting, shot blasting and priming services are available. All plates are delivered with full Mill Test Certificates (EN 10204 3.1 or equivalent).
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Primary Standard | JIS G3106 | Full compliance |
| Steel Grade | SM570 | Confirmed |
| Delivery Condition | As-rolled / Normalized / TMCP | Available |
| Product Form | Steel Plate | Available |
| Thickness Range | 6 mm – 100 mm (typical) | Custom sizes available |
| Width / Length | Up to 3000–4000 mm / 12000–18000 mm | Custom cutting supported |
| Certification | EN 10204 3.1 / Mill Certificate | Available |
Chemical Composition
Chemical composition according to JIS G3106:
| Element | Ladle Analysis (Max. / Range %) | Product Analysis (Max. / Range %) |
|---|---|---|
| Carbon (C) | ≤ 0.18 (t ≤ 50 mm) ≤ 0.20 (t > 50 mm) | ≤ 0.22 |
| Silicon (Si) | ≤ 0.55 | ≤ 0.60 |
| Manganese (Mn) | ≤ 1.60 | ≤ 1.70 |
| Phosphorus (P) | ≤ 0.035 | ≤ 0.040 |
| Sulfur (S) | ≤ 0.035 | ≤ 0.040 |
Note: Controlled carbon and low impurity levels are essential to achieve high strength while maintaining acceptable weldability.
Mechanical Properties
Mechanical properties of JIS G3106 SM570:
| Thickness (mm) | Yield Strength ReH (min) | Tensile Strength Rm | Elongation A (min) |
|---|---|---|---|
| ≤ 16 | 460 MPa | 570 – 720 MPa | 19% / 15%* |
| > 16 ≤ 40 | 450 MPa | 570 – 720 MPa | 19% / 15%* |
| > 40 ≤ 75 | 430 MPa | 570 – 720 MPa | 19% / 15%* |
| > 75 ≤ 100 | 420 MPa | 570 – 720 MPa | 15% |
*Elongation values depend on test specimen size according to JIS G3106. Density: 7.85 g/cm³ Impact Test: Usually required at 0°C (27 J minimum) depending on thickness and customer specification.
Delivery Conditions
SHH STEEL supplies JIS G3106 SM570 steel plate as Mill Direct Supply in as-rolled, normalized or thermomechanically rolled condition according to customer requirements.
Additional options available:
- Shot blasting and shop primer
- Ultrasonic testing (EN 10160 or equivalent)
- Z-direction testing (Z15 / Z25 / Z35)
- Third-party inspection (SGS, BV, TUV, etc.)
Tolerances
Dimensional tolerances for SM570 steel plate follow JIS G3193 or equivalent international standards (EN 10029 / ASTM A6).
- Thickness, width and length tolerances according to the ordered class.
- Flatness according to applicable standard.
- Edge conditions: Mill edge or cut edge (flame / plasma).
Tighter tolerances can be provided upon request.
Weldability
SM570 is a higher-strength structural steel. Successful welding requires careful control of heat input, preheating (especially for thicker plates), and the use of low-hydrogen consumables.
Recommended welding consumables:
| Welding Process | Recommended Consumables |
|---|---|
| SMAW (Stick) | E8018, E9018 |
| GMAW (MIG/MAG) | ER80S-D2, ER90S-D2 |
| FCAW | E81T1, E91T1 |
| SAW | EH14 / matching high-strength flux |
Preheating is generally recommended. Interpass temperature control and, in some cases, post-weld heat treatment should be considered for critical applications.
Equivalent Material Grades
| Grade | Standard | Notes |
|---|---|---|
| SM570 | JIS G3106 | — |
| Q460C / Q460D | GB/T 1591 | Closest Chinese equivalents |
| S460N / S460M | EN 10025-3 / EN 10025-4 | Approximate European grades |
| ASTM A572 Grade 65 | ASTM | Approximate American equivalent |
| SM570 | JIS G3106 | Primary designation |
Applications
JIS G3106 SM570 is widely used in high-strength welded structures. Typical applications include:
| Application Area | Typical Components / Uses (Keywords) |
|---|---|
| Building Structures | Heavy beams, columns, frames – SM570 Structural Steel |
| Bridges | Main girders, high-load components – SM570 Bridge |
| Machinery | Heavy frames, supports – SM570 Machinery |
| Crane & Lifting Equipment | Boom structures, frames – SM570 Crane |
| General Fabrication | High-strength welded structures – SM570 Fabrication |
| Shipbuilding & Offshore | High-strength structural parts – SM570 Shipbuilding |
Why Choose SHH STEEL
SHH STEEL provides SM570 as Mill Direct Supply. We maintain long-term strategic cooperation with major Chinese steel mills and act as a first-level (primary) agent. This direct mill supply model allows us to offer competitive mill-direct pricing, faster delivery times, stable and traceable quality, and full Mill Test Certificates for JIS G3106 SM570 Steel Plate.
Customers benefit from reliable supply, short lead times and cost-effective solutions for high-strength structural steel projects worldwide. Our professional export team provides technical support and customized processing services to meet project requirements.
FAQ
- What is the strength level of SM570?SM570 has a minimum yield strength of 460 MPa (≤16 mm) and tensile strength of 570–720 MPa, making it the highest strength grade in the standard JIS G3106 series.
- Does SM570 require impact testing?Impact testing at 0°C (minimum 27 J) is commonly required, especially for thicker plates or when specified by the customer.
- Is SM570 equivalent to ASTM A572 Grade 65?Yes, SM570 is commonly considered an approximate equivalent to ASTM A572 Grade 65 for high-strength structural applications.
Conclusion
JIS G3106 SM570 Steel Plate from SHH STEEL is a high-strength weldable structural steel offering 460 MPa minimum yield strength and 570–720 MPa tensile strength. As Mill Direct Supply, we provide competitive pricing, consistent quality and full technical support. Trust SHH STEEL for your SM570 steel plate requirements.
Contact SHH STEEL today for stock availability, pricing and technical support. JIS G3106 SM570 Steel Plate, SM570 steel plate, SM570, SM570 Mill Direct Supply, SM570 supplier, SM570 equivalent
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